File Urls
"{\"id\":14134,\"type\":\"document\",\"url\":\"https:\/\/biteducation.easyedu.vn\/sites\/default\/files\/easyschool\/upload\/2026\/06\/van_b9_khanh_0.pdf\",\"width\":null,\"height\":null,\"thumbnail\":\"https:\/\/biteducation.easyedu.vn\/sites\/all\/themes\/easyedu\/images\/pdf-large.png\"}"
Lecture Type
Bài tập về nhà
code
BTVN B9
Created by
be3ffb65-6cdc-493a-967b-2e872bfaeb09